<template>
  <div class="mod-menu">
    <el-form :inline="true" :model="dataForm">
      <el-form-item>
        <el-button v-if="isAuth('sys:config:save')" type="primary" @click="addOrUpdateHandle()">新增</el-button>
      </el-form-item>
    </el-form>

    <el-table :data="dataList" row-key="id" border style="width: 80%; ">
      <el-table-column prop="displayName" header-align="center" min-width="250" label="名称">
      </el-table-column>

      <el-table-column prop="parentName" header-align="center" align="center" width="300" label="所属配置">
      </el-table-column>

      <el-table-column fixed="right" header-align="center" align="center" width="150" label="操作">
        <template slot-scope="scope">
          <el-button v-if="scope.row.type === 1" type="text" size="small"
            @click="handlePreview(scope.row)">下载</el-button>
          <el-button v-if="isAuth('sys:config:update') && scope.row.type != undefined" type="text" size="small"
            @click="addOrUpdateHandle(scope.row.id)">修改</el-button>
          <el-button v-if="isAuth('sys:config:delete') && scope.row.type != undefined" type="text" size="small"
            @click="deleteHandle(scope.row.id)">删除</el-button>
        </template>
      </el-table-column>
    </el-table>
    <!-- 弹窗, 新增 / 修改 -->
    <add-or-update v-if="addOrUpdateVisible" ref="addOrUpdate" @refreshDataList="getDataList"></add-or-update>
  </div>
</template>

<script>
  import AddOrUpdate from './module/config-add-or-update'
  import { treeDataTranslate } from '@/utils'
  export default {
    data() {
      return {
        dataForm: {},
        dataList: [],
        dataListLoading: false,
        addOrUpdateVisible: false
      }
    },
    components: {
      AddOrUpdate
    },
    activated() {
      this.getDataList()
    },
    methods: {
      // 获取数据列表
      getDataList() {
        this.dataListLoading = true
        this.$http({
          url: this.$http.adornUrl('/sys/config/list'),
          method: 'get',
          params: this.$http.adornParams()
        }).then(({ data }) => {
          this.dataList = treeDataTranslate(data, 'id')
          this.dataListLoading = false
        })
      },
      // 新增 / 修改
      addOrUpdateHandle(id) {
        this.addOrUpdateVisible = true
        this.$nextTick(() => {
          this.$refs.addOrUpdate.init(id)
        })
      },
      // 删除
      deleteHandle(id) {
        this.$confirm(`确定删除指定配置项?`, '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).then(() => {
          this.$http({
            url: this.$http.adornUrl(`/sys/config/delete/${id}`),
            method: 'post',
            data: this.$http.adornData()
          }).then(({ data }) => {
            if (data && data.code === 0) {
              this.$message({
                message: '操作成功',
                type: 'success',
                duration: 1500,
                onClose: () => {
                  this.getDataList()
                }
              })
            } else {
              this.$message.error(data.msg)
            }
          })
        }).catch(() => { })
      },
      handlePreview(row) {
        // 点击下载
        this.getBlob(row.fileUrl).then(res => {
          this.saveAs(res, row.displayName)
        })
      },
      getBlob(url) { // url:是文件在oss上的地址
        return new Promise(resolve => {
          const xhr = new XMLHttpRequest()
          xhr.open('GET', url, true)
          xhr.responseType = 'blob'// 请求类型是blob类型
          xhr.crossOrigin = '*' // 解决跨域问题
          xhr.onload = () => {
            if (xhr.status === 200) {
              resolve(xhr.response)
            }
          }
          xhr.send()
        })
      },
      saveAs(blob, filename) {
        if (window.navigator.msSaveOrOpenBlob) {
          navigator.msSaveBlob(blob, filename)
        } else {
          const link = document.createElement('a')
          const body = document.querySelector('body')
          link.href = window.URL.createObjectURL(blob)
          link.download = filename
          link.style.display = 'none'
          body.appendChild(link)
          link.click()
          body.removeChild(link)
          window.URL.revokeObjectURL(link.href)
        }
      }
    }
  }
</script>